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05182013, 03:26 PM #1
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Medical risk calculator  three inputs
Hi all,
I'm trying my hand at jscript for the first time (au fait with html and css). I'd like to build a medical risk calculator to sit in a side block on a drupal site. The html form is done.
Input x is the size of an aneurysm and input will be in text and then parsed into ranges (07mm, 710mm and 10+mm)
Input y is location of aneurysm and consists of three options, a, b & c.
Input z is yes / no radio button
Output (risk) should update each time input is changed (no submit button).
Each combination of these variables should produce two linked risk values (% in one year and % in five years). The number of potential outputs is thus 3x3x2 = 18 (so it's not really a calculation, more a lookup). I am imagining some sort of 18faceted list of functions like this:
If x=1 AND y=1 AND z=1 THEN output Risk combo 1
IF x=2 AND y=1 AND z=1 THEN output Risk combo 2
IF x=3 AND y=1 AND z=1 THEN output Risk combo 3
IF x=1 AND y=2 AND z=1 THEN output Risk combo 4
IF x=2 AND y=2 AND z=1 THEN output Risk combo 5
IF x=3 AND y=2 AND z=1 THEN output Risk combo 6
IF x=1 AND y=3 AND z=1 THEN output Risk combo 7
IF x=2 AND y=3 AND z=1 THEN output Risk combo 8
IF x=3 AND y=3 AND z=1 THEN output Risk combo 9
If x=1 AND y=1 AND z=2 THEN output Risk combo 10
IF x=2 AND y=1 AND z=2 THEN output Risk combo 11
IF x=3 AND y=1 AND z=2 THEN output Risk combo 12
IF x=1 AND y=2 AND z=2 THEN output Risk combo 13
IF x=2 AND y=2 AND z=2 THEN output Risk combo 14
IF x=3 AND y=2 AND z=2 THEN output Risk combo 15
IF x=1 AND y=3 AND z=2 THEN output Risk combo 16
IF x=2 AND y=3 AND z=2 THEN output Risk combo 17
IF x=3 AND y=3 AND z=2 THEN output Risk combo 18
How should one best go about performing these functions?

05192013, 08:28 AM #2
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since you mentioned a lookuptable, what about a nested Array?
PHP Code:// though you need to use a 0based index in your <input>s
var risks = [ // xlevel
[ // ylevel
[risk combo 1, risk combo 2], // zlevel
[risk combo 3, risk combo 4],
[risk combo 5, risk combo 6]
],
[
[risk combo 7, risk combo 8],
[risk combo 9, risk combo 10],
[risk combo 11, risk combo 12]
],
[
[risk combo 13, risk combo 14],
[risk combo 15, risk combo 16],
[risk combo 17, risk combo 18]
]
]
// access would work like
// remember, it's zeroindexed
var combo = risks[x][y][z];
Last edited by Dormilich; 05192013 at 08:32 AM.
The computer is always right. The computer is always right. The computer is always right. Take it from someone who has programmed for over ten years: not once has the computational mechanism of the machine malfunctioned.André Behrens, NY Times Software Developer

05192013, 03:18 PM #3
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Thanks for your suggestion  will read around this approach and give it a try!

05192013, 03:34 PM #4
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if you don’t have numbers as input value, you could do the same with an object.
PHP Code:var risks = {
"category 1": {
"class 1" : {
"subclass 1": "combo 1",
"subclass 2": "combo 2" // etc.
},
"class 2" : {
// etc.
}
},
"category 2": {
// etc.
}
};
The computer is always right. The computer is always right. The computer is always right. Take it from someone who has programmed for over ten years: not once has the computational mechanism of the machine malfunctioned.André Behrens, NY Times Software Developer